Improved beige-kiln



v'ro ALL WHoM IT MAYCONQERN; l

LESLIE n *j-NoRMANfAND' WILLIAM RDIETERIGHS; 0F ST. LOUIS, MISSOURI'.

IMPnovsD BIiIcK-KILN.

Be known that we,ginestre."1t. NORMAN'andWILLIAiI FLDIETERIcHs, both of the'fcity and Ycounty of St. Louis,.t`md State-offMissouri,-haveinvented anew andusef'ul improvement in Kiins for Burning Bricks; Tiles, Earthenware', &c;; and' we vdo hereby declare that 'thcfollowing sfa full'aud cleardescriptionthereof, reference v being had to the'accempanyingdrawings.and to the lettersof reference marked thereon. i

Figure 1 ofthe drawings is asectional plan of the improved kiln." i

Figure 2 isis transverse v ertical section.` i

Figure 3 isa, longitudinal 'verticai section.

Thisjnventionlrelates, firstly, to the construction of the trails of the kiln," whereby. they are made strong enough Ato'nrith'stmxd the expansive force of the'conned air within the kiln, and the walls of'the kiln areothervvise s o constrncteasto a`ord` a-neconomical eirpenditure oi`4 .fuel .used for heating purposes.v The invention alsoxrelzrtesto the rrungexnent of 'the smoke and' hot and gold-air dues and pussages andftoan arrangement. of valves for thev p rpose of changing the direction of the currents of Smokfe and hot'air. Y

' To enublethose'skilled in the art to make and use our improved kiln, we will proceed to describe its construction andoperation.`

This kiln vis'an improvement on' akiln-previously invented b'y ourselves,.nd on-ifhich' the patent is already ordered' to issue. The sides of the kiln are built oftwo thicknesses of walls,ve., an inner ivall A andan o uterlwall, Al, enclosing a hotair chamber, A2, between them. The inner wall A should be built with. straight-sides, but the wall Al-shouldhave concave sides, the same as those in our former invention... The two Walls should be tied together lattbeuanglesiby'vving'walls a', whichare tobe'bilt up alternately tn oiiesidc and then to the other, Vso as to allow a free circulation of air. into the corner of chamber A2.. The cold-air chambersB inv this invention are'much the same ,as thosein'nnriihrmer invention. Thencold air .passes into them. from underground passages .(.noLshoWnMhx-o'ugh the aperture 'b and thence through'apertures b 'to the nsh-b'o-xMQvbelorr the grate-barsC. In v'the present invention, in addition to the coldair chamber above 4alluded to, there is allot-air chamber, D, immediately above it, as clearly shownh inffig'. 3., The smokeschaniber's d,'on top of and near'the ends of the chambers D, are much the same asthos'e in our former kiln. The smokerom thekiln'entersr"their-open ends and'passes thence donml in'to the chambers D through the aperture d. The smoke-chambers d und tlievtqp lwalls of the chambers B and D (although not represented s o in 'the drawings) may be formed of brick arches. The top oi this kln is covered with double brick arches E E', the, latter being perforatedwith smoke-holes e, the same asin our formerkiln. The ventilation-doors'e are also similar in construction vand arrangement to those formerlyeinployed. The chimneys F in this kiln are much diii'erent from those hithertojemployed. `They should-be arranged, as shown in 1, withonof them at each end' of -each of the chambers D and connected with the Achamber A2 (which-is n open communication with the chambersD) by the orifice a2 in the wall lAl at .valve F inthe chimney may'be opened ivhen desired, 'so as to allow'the 'smoke to'pass intothe flue in the direction of the arrow f Lbut trhen'i't is desirable to closevth'e said valve the smoke andheated air ivill pass up into-the chamber A? inthe direction of the arrowlff.' vIn this chamber a. large-part of. the heat that would otherwise-be wasted will be absorb-ed and economizedl in the kiln. A great improvement over the old kilns consists in starting the-fires in the centreof vthe kiln ,'and\for this reason we-ccnstru'ct the 'gratefbars C entirely across the kiln,'as sho-wn infig.l 1. A'great'economy of time andfuel'in starting the kiln is thus 'effected'.

` 'Having thusfully described-enfinvention, we claim Atherein as new, and desire to secure by. Letters I atent-h- 1. Constructing the sides of. our improved brick-kilnof double ivalls, to enclosefa h'otair chambelujwhenv the outwrdvvall is'vinwardly curved or arched, the inner wall being straight, all substantially in the manner herenidescribed-I and for the purposes set forth.

2. vW claim, also, the arrangement of a hot-air chamber, D, over the lc oId-air Lsupplychambe'r between the lire-spaces of our improved kiln, constructed and operatings'ubstantiallf in the manner and for the purpose herein specified.

3. -The combination and arrangement of the outer chimneysF, the vaives F', and the aix-chambers and .D enclosing the kiln, all-substantially in the manner and for the purpose herein set fdl-th."

.4. We claim also the arrangement of the fire-boxes with grate-bars extending entirely across our` improved'.

kiln, sbustantially'as herein set forth'. v

- LESLIE n. NQRMAIL .F.- DIIETERICHS.

Witnesses:

" M. 'BANnoLPH',

S. M. RANnoxirn-f 

